Concrete building-block.



' IfATENTED NOV. 6, 1906.

H G U 0 L A CONCRETE BUILDING BLOCK.

APPLICATION I'ILBD PEBJQ. 1 906.

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. UNITED STATES PATENT OFFICE.

ARLANDO LOUGH, OF ESTHERVILLE, IOWA.

CONCRETE BUILDING-BLOCK.

Specification of Letters Patent.

Patented Nov. 6, 1906. I

Application filed February 10, 1905. Serial No. 245,150-

ing-Blocks, of which the following is a specification.

This invention aims to provide improvements in building-blocks that type which are designed to be used for constructing building-walls having no continuously-solid portions from the outer to the inner sides thereof. The superior qualities of walls of this class from the standpoint of resisting the penetration of frost, dampness, and heat have been fully demonstrated; but the building-blocks heretofore made for constructing walls of this class have been composed of block structure weakened by the provision of specially-arranged air-cavities in one instance or such blocks have used such an amount of plastic material in their composition as to make them very expensive.

The object of this invention, therefore, is to secure a construction of block of the type above mentioned having the necessary advantageous qualities remarked upon, but

embodying the structure, and utilize a minimum amount of material, yet possess a maximum amount of strength and durability.

For a full description of the invention and the remarks thereof and also to acquire a knowledge of the details of construction and the means for effecting the result reference is to be had to the following description and accompanying drawings, in which Figure 1 is a perspective view showing a partially-constructed building-Wall composed of blocks made in accordance with this invention. Fig. 2 is a plan view of the wall. Fig. 3, is a transverse sectional view through one of the building-blocks. Fig. 4 is a plan view of a wall at the joist-line, showing the manner of setting joists in the wall. Fig. 5 is a sectional view showing clearly the arrangement of parts shown in Fig. 4 with reference to the means for tying the joists to the blocks of the wall construction.

Corresponding and like parts are referred to in the following description and in the drawings by the same reference characters. The block A, embodying the invention, comprises a body hollow throughout its length, as shown at B. The hollow portion B of the block is made as large as practicable without weakening the structure and of course forms a large air-space. between the outer and inner sides of the same. The front' wall of the block A is transversely thickened, and longitudinal cavities C extend into the thickened wall aforesaid from the upper and lower sides of said block. The cavities C are of somewhat triangular form in cross section, being reduced toward their inner extremities, which extremities overlap the main hollow portion B of the block. The term overlap as used herein is in the same sense as now commonly used in this art.-

The wall of the blocks in which the cavities C are formed being thickened, it is seen that the block structure is not weakened by the arrangement of these cavities, and, further, those portions of the body of the block which separate the hollow portion B from the cavities C are thickened to further reinforce the block structure in an obvious manner.

The arrangement of the cavities C with re-.- gard to the hollow portion B forms a block in Y which there are no continuously-solid portions from the front to the rear in a straight line, and such structure is advantageous in that frosts, dampness, or heat must necessarily take a tortuous path in order to penetrate a wall constructed of blocks as above described. The blocks are therefore designed to afford maximum protection 'so far as penetration of frost, dampness, and heat is concerned. Further, the mortar surface of blocks (indicated ate) presents a. maximum surface to'receive the mortar, and it will also be noted that when the upper layer of blocks has been placed in position on the wall the latter is thereby finished and no ca ping or other finishing is required for comp etion .of the wall structure, this accomplishing quite a saving of expense in building construction.

Another feature of the invention is com-v purpose certain blocks will be molded with recesses at one end thereof, said recesses intersecting the hollow portion and extending from the rear side of the block, but terminating, preferably, at the point adjacent the outer walls of the cavities C. The recesses in the ends of the various blocks are adapted to receive the ends of the joists D, and since.

said joists do not project entirely through the blocks the outer finish or surface of the wall is unbroken. Suitable ties f are laid by each of said building-blocks being continuously hollow throughout its length, certain blocks having adjacent end portions thereof spaced apart, joists having the ends thereof seated on the wall by being arranged in the spaces between adjacent end portions of the blocks thereof, the ends of the joists being provided with transverse openings, and 1011- gitudinal ties consisting of pins inserted endwise into the hollow portions of the blocks between which the ends of the joists are received and passing through the openings in said joists to secure the latter to the wall.

. ARLANDO LOUGH.

Witnesses:

MILO H. KENDALL, M. H. KENDALL, CLARENCE E. PERSON. 

